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| 1 | Beneficiation of the gold bearing ore by gravity and flotation显示文摘Gold concentration usually consists of gravity separation, flotation, cyanidation, or the combination of these processes. The choice among these processes depends on the mineralogical characterization and gold content of the ore. Recently, the recovery of gold using gravity methods has gained attention because of low cost and environmentally friendly operations. In this study, gold pre-concentrates were produced by the stepwise gravity separation and flotation techniques. The Knelson concentrator and conventional flotation were employed for the recovery of gold. Gold bearing ore samples were taken from Gümüshane Region, northern east part of Turkey. As a result of stepwise Knelson concentration experiments, a gold concentrate assaying around 620 g/t is produced with 41.4wt% recovery. On the other hand, a gold concentrate about 82 g/t is obtained with 89.9wt% recovery from a gold ore assaying 6 g/t Au by direct flotation. | Alim Gül Olga Kangal Ayhan A. Sirkeci Güven nal | 2012 | International Journal of Minerals,Metallurgy and Materials2012，19，2： | 10 |
| 2 | Percutaneous radiofrequency ablation for early hepatocellular carcinoma: Risk factors for survival显示文摘AIM: To evaluate outcomes of radiofrequency ablation(RFA) therapy for early hepatocellular carcinoma(HCC) and identify survival- and recurrence-related factors. METHODS: Consecutive patients diagnosed with early HCC by computed tomography(CT) or magnetic resonance imaging(MRI)(single nodule of ≤ 5 cm, or multi-(up to 3) nodules of ≤ 3 cm each) and who underwent RFA treatment with curative intent between January 2010 and August 2011 at the Instituto do Cancer do Estado de S o Paulo, Brazil were enrolled in the study. RFA of the liver tumors(with 1.0 cm ablative margin) was carried out under CT-fluoro scan and ultrasonic image guidance of the percutaneous ablation probes. Procedure-related complications were recorded. At 1-mo post-RFA and 3-mo intervals thereafter, CT and MRI were performed to assess outcomes of complete response(absence of enhancing tissue at the tumor site) or incomplete response(enhancing tissue remaining at the tumor site). Overall survival and diseasefree survival rates were estimated by the Kaplan-Meier method and compared by the log rank test or simple Cox regression. The effect of risk factors on survival was assessed by the Cox proportional hazard model. RESULTS: A total of 38 RFA sessions were performed during the study period on 34 patients(age in years: mean, 63 and range, 49-84). The mean follow-up time was 22 mo(range, 1-33). The study population showed predominance of male sex(76%), less severe liver disease(Child-Pugh A, n = 26; Child-Pugh B, n = 8), and single tumor(65%). The maximum tumor diameters ranged from 10 to 50 mm(median, 26 mm). The initial(immediately post-procedure) rate of RFAinduced complete tumor necrosis was 90%. The probability of achieving complete response was significantly greater in patients with a single nodule(vs patients with multi-nodules, P = 0.04). Two patients experienced major complications, including acute pulmonary edema(resolved with intervention) and intestinal perforation(led to death). The 1- and 2-year overall survival rates were 82% and 71%, respectively. Sex, tumor size, initial response, and recurrence status influenced survival, but did not reach the threshold of statistical significance. Child-Pugh class and the model for end-stage liver disease score were identified as predictors of survival by simple Cox regression, but only Child-Pugh class showed a statistically significant association to survival in multiple Cox regression analysis(HR = 15; 95%CI: 3-76 mo; P = 0.001). The 1-and 2-year cumulative disease-free survival rates were 65% and 36%, respectively. CONCLUSION: RFA is an effective therapy for local tumor control of early HCC, and patients with preserved liver function are the best candidates. | Luciana Kikuchi Marcos Menezes Aline L Chagas Claudia M Tani Regiane SSM Alencar Marcio A Diniz Venncio AF Alves Luiz Augusto Carneiro D’Albuquerque Flair José Carrilho | 2014 | World Journal of Gastroenterology2014，20，6： | 5 |
| 3 | Endometrial receptivity in an in vitro fertilization program as assessed by spiral artery blood flow, endometrial thickness, endometrial volume, and uterine artery blood flow显示文摘 | Ralf L Schild Christine Knobloch Christoph Dorn Rolf Fimmers Hans van der Ven Manfred Hansmann | 2001 | Fertility and Sterility2001，，2： | 2 |
| 4 | Optimum dietary amino acid pattern and limiting order of some essential amino acids for growing-furring blue foxes (Alopex lagopus)显示文摘 | DAHLMAN T VALAJA J VEN?L?INEN E | 2004 | British Society of Animal Science2004，，： | 1 |
| 5 | Endocrine effects of tetrabromobisphenol - A (TBBPA) in Wistar rats as tested in a one-generation reproduction study and a subacute toxicity study 显示文摘 | Van der Ven L T M De Kuil T V Verhoef A | 2008 | Toxicology2008，245，12： | 1 |
| 6 | Curing processes in solvent - borne alkyd coatings with different drier combi- nations 显示文摘 | ERICH S J F VAN DER VEN L G J HU1NINK H P | 2006 | The Journal of Physical Chemistry B2006，110，15： | 1 |
| 7 | Production by and isolation of exopolysaccharides from Streptococcus thermophilus grown in a milk medium and evidence for their growth-associated biosynthesis显示文摘 | VANDERVEKEN F VAN DE VEN S | 1998 | J Appl Microbiol1998，84，： | 1 |
| 8 | Cystic fibrosismutation screening in healthy men with reduced sperm quality显示文摘 | van der Ven K Messer L van der Ven H | 1996 | Hum Reprod1996，11，： | 1 |
| 9 | Development of waterborne UV-A curable clear coat for car refinishes 显示文摘 | van den Berg K J van der Ven L G J van den Haak H J W | 2008 | Progress in Organic Coatings2008，61，234： | 1 |
| 10 | Exposureto tetrabromobisphenol A(TBBPA)in Wistar rats:neurobehavioral effects inoffspring from a one-generation reproduction study显示文摘 | LILIENTHAL H VERWER C M VAN Der VEN L T | 2008 | Toxicology2008，246，1： | 1 |
| 11 | Interaction of ammonia with Brnsted acid sites in different cages of zeolite Y as studied by proton MAS NMR显示文摘 | JACOBS W DE HAAN J VAN DE VEN L VAN SANTEN R | 1993 | J Phys Chem1993，97，10： | 1 |
| 12 | Relative importance of infochemicals from first and second trophic level in long-range host location by the larval parasitoid Cotesia (=Apanteles) glomerata显示文摘 | Steinberg S Dicke M ven L E M | 1993 | J Chem Ecol1993，19，： | 1 |
| 13 | Introduction and differential use of various promotors in pollen grains of Nicotiana glutinosa and Lilium longiflorum 显示文摘 | LEEDE P L M VEN B C E BINO R J | 1992 | Plant Cell Rep1992，11，1： | 1 |
| 14 | Tourism and Nativistic Ideology in Cuzco,Peru显示文摘 | | 2000 | Annals of Tourism Research2000，27，1： | 1 |
| 15 | Subacute effectsof the brominated flame retardants hexabromocyclododecane andtetrabromobisphenol A on hepatic cytochrome P450 levels inrats显示文摘 | GERMER S PIERSMA A H VAN DER VEN L | 2006 | Toxicology2006，218，23： | 1 |
| 16 | Zeolite Y type supported nickel and molybdenum sulfide, relation between metal sulfide distribution and catalytic properties in thiophene hydrodesulfurization 显示文摘 | Vorbeck G Wehers W J Van Der Ven L J M | 1994 | Stud Surf Sci Catal1994，84，： | 1 |
| 17 | Cystic fibrosis mutation screening in healthy men with reduced sperm quality显示文摘 | Van der Ven K Messer L van der Ven H | 1996 | Hum Reprod1996，11，3： | 1 |
| 18 | Spatial association of prolyl oligopeptidase,inositol 1,4,5-triphosphate type 1 receptor,substance P and its neurokinin-1 receptor in the rat brain:an immunohistochemical colocalization study显示文摘 | My(o)h(a)nen TT Ven(a)l(a)inen JI Garcia-Horsman JA | | 0，，04： | 1 |
| 19 | On the Action of Hydrotalcite Clay Materials as Stabilizers in Poly(vinyl chloride)显示文摘 | Van der Ven L Van Gemert M L M Batenburg L F | 2000 | Appl Clay Sci2000，17，： | 1 |
| 20 | On the Action of Hydrotalcite-Iike Clay Materials as Stabilizers in Polyvinylchloride显示文摘 | Van der Ven L Gemert M | 2000 | Appled Clay Science2000，17，12： | 1 |
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